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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $113,395,000 | 568,191,200 | 568,191,200 |
| 2006 | $114,652,000 | 472,708,500 | 472,708,500 |
| 2007 | $113,927,000 | 424,878,629 | 424,878,629 |
| 2008 | $159,267,000 | 474,801,600 | 474,801,600 |
| 2009 | $39,311,000 | 24,401,049 | 24,401,049 |
| 2010 | $32,069,377 | 26,035,500 | 26,035,500 |
| 2011 | $35,316,697 | 26,831,811 | 26,831,811 |
Note: Quantity represents Weight in kilograms
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